9.25. 验证扩展

<dubbo:service validation="xxx,yyy" />
<!-- 缺省值设置，当<dubbo:service>没有配置validation属性时，使用此配置 -->
<dubbo:provider validation="xxx,yyy" />

• Maven 项目结构：

  src
   |-main
      |-java
          |-com
              |-xxx
                  |-XxxValidation.java (实现Validation接口)
      |-resources
          |-META-INF
              |-dubbo
                  |-org.apache.dubbo.validation.Validation (纯文本文件，内容为：xxx=com.xxx.XxxValidation)
  

• XxxValidation.java：

  package com.xxx;
  import org.apache.dubbo.validation.Validation;
  public class XxxValidation implements Validation {
      public Object getValidator(URL url) {
          // ...
      }
  }
  

• XxxValidator.java：

  package com.xxx;
  import org.apache.dubbo.validation.Validator;
  public class XxxValidator implements Validator {
      public XxxValidator(URL url) {
          // ...
      }
      public void validate(Invocation invocation) throws Exception {
          // ...
      }
  }
  

• META-INF/dubbo/org.apache.dubbo.validation.Validation：

  xxx=com.xxx.XxxValidation